/**
 * Created by jiachenpan on 16/11/18.
 */

export function parseTime(time, cFormat) {
  if (arguments.length === 0) {
    return null;
  }
  const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}';
  let date;
  if (typeof time == 'object') {
    date = time;
  } else {
    if (('' + time).length === 10) time = parseInt(time) * 1000;
    date = new Date(time);
  }
  const formatObj = {
    y: date.getFullYear(),
    m: date.getMonth() + 1,
    d: date.getDate(),
    h: date.getHours(),
    i: date.getMinutes(),
    s: date.getSeconds(),
    a: date.getDay()
  };
  const time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
    let value = formatObj[key];
    if (key === 'a') return ['一', '二', '三', '四', '五', '六', '日'][value - 1];
    if (result.length > 0 && value < 10) {
      value = '0' + value;
    }
    return value || 0;
  });
  return time_str;
}

export function formatTime(time, option) {
  time = +time * 1000;
  const d = new Date(time);
  const now = Date.now();

  const diff = (now - d) / 1000;

  if (diff < 30) {
    return '刚刚'
  } else if (diff < 3600) { // less 1 hour
    return Math.ceil(diff / 60) + '分钟前'
  } else if (diff < 3600 * 24) {
    return Math.ceil(diff / 3600) + '小时前'
  } else if (diff < 3600 * 24 * 2) {
    return '1天前'
  }
  if (option) {
    return parseTime(time, option)
  } else {
    return d.getMonth() + 1 + '月' + d.getDate() + '日' + d.getHours() + '时' + d.getMinutes() + '分'
  }
}

// 格式化时间
export function getQueryObject(url) {
  url = url == null ? window.location.href : url;
  const search = url.substring(url.lastIndexOf('?') + 1);
  const obj = {};
  const reg = /([^?&=]+)=([^?&=]*)/g;
  search.replace(reg, (rs, $1, $2) => {
    const name = decodeURIComponent($1);
    let val = decodeURIComponent($2);
    val = String(val);
    obj[name] = val;
    return rs;
  });
  return obj;
}


/**
*get getByteLen
* @param {Sting} val input value
* @returns {number} output value
*/
export function getByteLen(val) {
  let len = 0;
  for (let i = 0; i < val.length; i++) {
    if (val[i].match(/[^\x00-\xff]/ig) != null) {
      len += 1;
    } else { len += 0.5; }
  }
  return Math.floor(len);
}

export function cleanArray(actual) {
  const newArray = [];
  for (let i = 0; i < actual.length; i++) {
    if (actual[i]) {
      newArray.push(actual[i]);
    }
  }
  return newArray;
}

export function param(json) {
  if (!json) return '';
  return cleanArray(Object.keys(json).map(key => {
    if (json[key] === undefined) return '';
    return encodeURIComponent(key) + '=' +
           encodeURIComponent(json[key]);
  })).join('&');
}

export function param2Obj(url) {
  const search = url.split('?')[1];
  if (!search) {
    return {}
  }
  return JSON.parse('{"' + decodeURIComponent(search).replace(/"/g, '\\"').replace(/&/g, '","').replace(/=/g, '":"') + '"}');
}

export function html2Text(val) {
  const div = document.createElement('div');
  div.innerHTML = val;
  return div.textContent || div.innerText;
}

export function objectMerge(target, source) {
   /* Merges two  objects,
    giving the last one precedence */

  if (typeof target !== 'object') {
    target = {};
  }
  if (Array.isArray(source)) {
    return source.slice();
  }
  for (const property in source) {
    if (source.hasOwnProperty(property)) {
      const sourceProperty = source[property];
      if (typeof sourceProperty === 'object') {
        target[property] = objectMerge(target[property], sourceProperty);
        continue;
      }
      target[property] = sourceProperty;
    }
  }
  return target;
}


export function scrollTo(element, to, duration) {
  if (duration <= 0) return;
  const difference = to - element.scrollTop;
  const perTick = difference / duration * 10;
  setTimeout(() => {
    console.log(new Date())
    element.scrollTop = element.scrollTop + perTick;
    if (element.scrollTop === to) return;
    scrollTo(element, to, duration - 10);
  }, 10);
}

export function toggleClass(element, className) {
  if (!element || !className) {
    return;
  }
  let classString = element.className;
  const nameIndex = classString.indexOf(className);
  if (nameIndex === -1) {
    classString += '' + className;
  } else {
    classString = classString.substr(0, nameIndex) + classString.substr(nameIndex + className.length);
  }
  element.className = classString;
}

export const pickerOptions = [
  {
    text: '今天',
    onClick(picker) {
      const end = new Date();
      const start = new Date(new Date().toDateString());
      end.setTime(start.getTime());
      picker.$emit('pick', [start, end]);
    }
  }, {
    text: '最近一周',
    onClick(picker) {
      const end = new Date(new Date().toDateString());
      const start = new Date();
      start.setTime(end.getTime() - 3600 * 1000 * 24 * 7);
      picker.$emit('pick', [start, end]);
    }
  }, {
    text: '最近一个月',
    onClick(picker) {
      const end = new Date(new Date().toDateString());
      const start = new Date();
      start.setTime(start.getTime() - 3600 * 1000 * 24 * 30);
      picker.$emit('pick', [start, end]);
    }
  }, {
    text: '最近三个月',
    onClick(picker) {
      const end = new Date(new Date().toDateString());
      const start = new Date();
      start.setTime(start.getTime() - 3600 * 1000 * 24 * 90);
      picker.$emit('pick', [start, end]);
    }
  }]

export function getTime(type) {
  if (type === 'start') {
    return new Date().getTime() - 3600 * 1000 * 24 * 90
  } else {
    return new Date(new Date().toDateString())
  }
}

export function debounce(func, wait, immediate) {
  let timeout, args, context, timestamp, result;

  const later = function() {
   // 据上一次触发时间间隔
    const last = +new Date() - timestamp;

   // 上次被包装函数被调用时间间隔last小于设定时间间隔wait
    if (last < wait && last > 0) {
      timeout = setTimeout(later, wait - last);
    } else {
      timeout = null;
     // 如果设定为immediate===true，因为开始边界已经调用过了此处无需调用
      if (!immediate) {
        result = func.apply(context, args);
        if (!timeout) context = args = null;
      }
    }
  };

  return function(...args) {
    context = this;
    timestamp = +new Date();
    const callNow = immediate && !timeout;
   // 如果延时不存在，重新设定延时
    if (!timeout) timeout = setTimeout(later, wait);
    if (callNow) {
      result = func.apply(context, args);
      context = args = null;
    }

    return result;
  };
}


export function deepClone(source) {
  if (!source && typeof source !== 'object') {
    throw new Error('error arguments', 'shallowClone');
  }
  const targetObj = source.constructor === Array ? [] : {};
  for (const keys in source) {
    if (source.hasOwnProperty(keys)) {
      if (source[keys] && typeof source[keys] === 'object') {
        targetObj[keys] = source[keys].constructor === Array ? [] : {};
        targetObj[keys] = deepClone(source[keys]);
      } else {
        targetObj[keys] = source[keys];
      }
    }
  }
  return targetObj;
}

export function padLeftZero(str, len) {
  if (!str) {
    return ''
  }
  for (let i = 0; i < len; i++) {
    str = '0' + str
  }

  return str.substring(str.length - len)
}
export function formatCash(num) {
  return (+num || 0).toString().replace(/^-?\d+/g, m => m.replace(/(?=(?!\b)(\d{3})+$)/g, ','));
}
export function dataMasking(str, prefixLen = 3) {
  if (str) {
    str += ''
    return str.substring(0, prefixLen) + '****'
  }
  return ''
}
/**
  * 乘法函数，用来得到精确的乘法结果
  * @param {Number} point 被乘数
  * @param {Number} otherNum 乘数
  */
export function toPercent(point, otherNum = 100) {
  if (point === 0) {
    return 0;
  }
  let m = 0
  const s1 = point.toString()
  const s2 = otherNum.toString()
  try {
    const s1Arr = s1.split('.')
    if (s1Arr.length === 2) {
      m += s1Arr[1].length
    }
  } catch (e) {
    console.error(e)
  }
  try {
    const s2Arr = s2.split('.')
    if (s2Arr.length === 2) {
      m += s2Arr[1].length
    }
  } catch (e) {
    console.error(e)
  }
  let str = Number(s1.replace('.', '')) * Number(s2.replace('.', '')) / Math.pow(10, m)
  str += '%'
  return str;
}
/**
 * 加法函数，用来得到精确的加法结果
 * @param {Number} num1 被加数
 * @param {Number} num2 加数
 */
export function accAdd(num1, num2) {
  let n1, n2
  try {
    // num1的小数位长度
    n1 = num1.toString().split('.')[1].length
  } catch (error) {
    n1 = 0
  }
  try {
    // num2的小数位长度
    n2 = num2.toString().split('.')[1].length
  } catch (error) {
    n2 = 0
  }
  const c = Math.abs(n1 - n2)
  const m = Math.pow(10, Math.max(n1, n2))
  if (c > 0) {
    const cm = Math.pow(10, c)
    if (n1 > n2) {
      num1 = Number(num1.toString().replace('.', ''))
      num2 = Number(num2.toString().replace('.', '')) * cm
    } else {
      num1 = Number(num1.toString().replace('.', '')) * cm
      num2 = Number(num2.toString().replace('.', ''))
    }
  } else {
    num1 = Number(num1.toString().replace('.', ''))
    num2 = Number(num2.toString().replace('.', ''))
  }

  return (num1 + num2) / m
}
// 金额加分隔符
export function formatAmt(amt) {
  let re = /(?=(?!\b)(\d{3})+$)/g;
  let str = String(amt);
  return str.replace(re, ',');
}
 /**
  * 解析URL
  * @param {String} url
  */
export function parseURL(url) {
  const a = document.createElement('a');
  a.href = url;
  return {
    source: url,
    protocol: a.protocol.replace(':', ''),
    host: a.hostname,
    port: a.port,
    query: a.search,
    params: (() => {
      const ret = {}
      const seg = a.search.replace(/^\?/, '').split('&')
      const len = seg.length
      let s;
      for (let i = 0; i < len; i++) {
        if (!seg[i]) { continue; }
        s = seg[i].split('=');
        ret[s[0]] = s[1];
      }
      return ret;
    })(),
    /*eslint-disable */
    file: (a.pathname.match(/\/([^/?#]+)$/i) || [, ''])[1],
    hash: a.hash.replace('#', ''),
    path: a.pathname.replace(/^([^\/])/, '/$1'),
    relative: (a.href.match(/tps?:\/\/[^\/]+(.+)/) || [, ''])[1],
    segments: a.pathname.replace(/^\//, '').split('/')
  };
}
/**
 * 根据出生日期计算年龄
 * @param {Date} birthDay 
 */
export function calcAgeByBirthday(birthDay = new Date()) {
  // console.log(new Date(birthDay))
  return new Date().getFullYear() - new Date(birthDay).getFullYear()
} 
